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ci: pin GitHub Actions to commit SHAs - #28
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Replace mutable tag references with the commit SHA each tag points to today, keeping the tag as a trailing comment. Resolves the Semgrep github-actions-mutable-action-tag findings reported by Bastion.
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Summary
Pins every third-party GitHub Action in this repository to a full commit SHA and keeps the release tag as a trailing comment, for example
uses: actions/checkout@<sha> # v4.2.2. This resolves the Semgrepgithub-actions-mutable-action-tagfindings that Bastion reports for this repository.Whoever controls an action can move a tag such as
@v4to different code, which is how the tj-actions/changed-files compromise (CVE-2025-30066) reached other repositories' workflows. A commit SHA cannot be moved.Each SHA is the commit its existing tag points to today, so action versions do not change unless noted below.
Testing
Generated with pinact 5.0.0 (
pinact runover.github/workflowsand.github/actions). A grep confirms that nouses:line for a remote action is left without a 40-character SHA. The workflows this PR touches run in CI here.Commits